Queue filling up, - over 2 gigs now!?

We are running Exchange 2000 SBS, and migrating to Exchange 2003. All mailboxes are actually on our new Exchange 2003 server, but the queue on the old server has over 2 gigs, and 2,000 emails in now. Consequently this has all but eaten up the space on our root drive. Does anybody have any ideas as to why the queue on the old server would fill up, and what I can do to fix this?
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Depends on the reason for that. It may be, that these are all replication mails as the servers will exchange information like the content of public folders. This may be heavily, if you have a lot of public folders.

Open the queue and open the mails or have a look into the tracking log (if enabled) to find out, who is the sender of the mails.

You should make sure, that you have enough free space on your drives, so than exchange can handle all the mails. If not, the handling of the replication mails may be stopped and filles up the queues.

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mckeoughAuthor Commented:
I think you hit the nail on the head with Public folders and the exchange of information. It so happens that we have an archiving system that archives email, and uses the public folder system to do so. The emails that were in the queue match what the system archives. I've disabled our archiving (we were going to do that anyway), and I've cleared the queue. Everything is back to normal. Thanks!
OK, but do not forget, that you may have to move the public folders to the new server, which will also produce replication messages. As teh replication has produced errors, make sure, the servers are in sync befor you disable th old server.
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